Later to mid-day, i was standing out on my deck which faces southwest, and i saw to the right a gray rectangular-shaped aircraft, guessing about 500 feet up, silent, moving eastward, slowly, low enough that i could see it did not have landing gear, or windows, like a flying box, with lights around the perimeter, not underneath, red and green and white, AND another identical flying gray "box" on the opposite side of me, westbound, and then a third one further in distance, flying toward my house, coming from the west. Size? I'm guessing about the size of a conventional 747 aircraft, but rectangular with no wings.

((NUFORC Note: Witness indicates that the date of the incident is approximate. PD))